Chuck Control Device Stroke Sensor Automation
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Solution Overview
Problem
Existing chuck control systems require manual adjustment of sensor positions for different work types, leading to operator workload and potential setting errors, and result in inefficient opening and closing motions due to incomplete automation.
Innovation Solution
An opening/closing control device that registers and displays work gripping and releasing positions, along with chuck type and direction, in an external memory device, using a stroke sensor to confirm positions and automate the setup process, reducing operator error and optimizing motion strokes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a proximity sensor is used to detect the operation rod position for confirming work gripping, then the gripping status can be detected, but manual adjustment of sensor position is required for each product type change, increasing operator workload and setup time
Solution Approach 1:
The patent replaces the mechanical/proximity sensor-based position detection system with an optical measurement system. A scale is attached to the operation rod and a light shield to the main spindle, creating an optical encoder system that automatically detects position without requiring manual sensor adjustment. This substitution eliminates the need for operator intervention in position setting while maintaining precise detection capability
Solution Approach 2:
The system enables self-service operation by automatically detecting and recording the operation rod position through the optical encoder system. When a product type is selected, the system automatically retrieves the corresponding grip position data from memory and uses it for detection, eliminating the need for operators to manually adjust or set sensor positions for each product change
2Ease of operation
If the operation rod moves to the stroke end when releasing the work, then the chuck opens completely, but the motion takes longer than necessary for short processing times
Solution Approach 1:
The patent implements dynamic motion control where the operation rod's movement range is adaptively adjusted based on the specific product type and processing requirements. Instead of always moving to the fixed stroke end position, the system calculates and executes an optimized release position that is sufficient for the current work, reducing unnecessary travel time while ensuring proper chuck opening for each specific case
Solution Approach 2:
The system changes the motion parameters (position, speed, acceleration) of the operation rod based on the selected product type and processing conditions. By storing optimized motion parameters for different product types in memory and dynamically adjusting them, the system achieves both complete chuck opening when needed and reduced motion time when sufficient opening is achieved at intermediate positions
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This solution significantly reduces operator workload and setup errors, ensures precise positioning, and optimizes chuck opening and closing motions, enhancing processing efficiency and reducing the risk of defects.
Implementation Method 1
a stroke sensor which continuously detects a moving position of the operation rod
Data Source
AI summary
The invention relates to a device controlling a chuck of a machine tool and an auxiliary equipment thereof, thereby facilitating a setup work. Gripping and releasing of a work are confirmed by registering a work gripping position and a work releasing position of a chuck, a kind of a used chuck, and a gripping direction of a work in an external memory device every product type of the work, transferring the work gripping position and the work releasing position in correspondence to the product type to a controller of a machine tool displaying them on a display of an operator control panel, detecting a position of an operation rod opening and closing a claw of the chuck by a stroke sensor, referring to the gripping position of the work, and detecting conformity of the detecting position and set values of the work gripping position and the work releasing position.